Callahan G-to-H

Callahan G-to-H
x = 34, y = 23, rule = B3/S23 4bo9bo$4b3o5b3o$bo5bo3bo$2bo3b2o3b2o$3o$9bo$8bobo$8bobo$9bo$31bo$31bo$ 20b2o9b3o$14b2o4b2o11bo$8b2o3b2o$7bo2bo4bo$2b2o4b2o$bobo$bo$2o$10b2o$ 10bo$11b3o$13bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBNAIL THUMBSIZE 2 WIDTH 600 HEIGHT 600 GPS 20 LOOP 96 ZOOM 16 PAUSE 2 T 95 PAUSE 2 AUTOSTART ]]
View static image
Pattern type	Conduit
Conduit type	Stable
Input	Glider
Output	Herschel
Number of cells	38
Bounding box	22 × 23
Step	Unknown
Recovery time (ignoring FNG if any)	92 ticks
Minimum overclock period (ignoring FNG if any)	Unknown
Spartan?	Yes
Discovered by	Paul Callahan
Year of discovery	1998
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3/S23 – B34e8/S234ce5ek6ei8
Pattern files Plaintext callahangtoh.cells RLE callahangtoh.rle

Callahan G-to-H is a stable glider-to-Herschel converter discovered by Paul Callahan in November 1998. It consists of four eater 1s, one block, and one or two beehive(s), and so it is Spartan.

The initial stage converts two gliders into a Herschel; the south-east glider deletes the extra beehive and the north-west glider triggers the bait beehive. In the infobox pattern, a ghost Herschel marks the output location. The north-west eater 1 can be replaced with a toad to give slightly more clearance on that side. As a 2G-to-H, or if overclocking is used with appended conduits with a correctly timed output glider, it has a repeat time of 92 ticks.

Beehive cleanup

The beehive-cleaning glider coming from the southeast can be supplied by a number of means.

• The converter can be followed by Fx77 and L112, then appending another Fx77, or a NW31, or a Fx119. With Fx77 the recovery time is 575 ticks, which is superseded by 497 ticks with the latter two choices. The composite device with NW31 is called Silver's reflector and the one with Fx119 is Silver G-to-H.

• If a L156 is added and its spare glider is reflected with two Snarks, the resulting repeat time is 386 ticks.

• The first natural glider of the output Herschel can be reflected with various combinations of bumpers, bouncers, and Snarks, as in the p8 G-to-H shown below.

x = 34, y = 34, rule = B3/S23 4bo9bo$4b3o5b3o$7bo3bo$2bo3b2o3b2o$3bo$b3o4$31bo$31bo$20b2o9b3o$20b2o 11bo$8b2o$7bo2bo$2b2o4b2o$bobo$bo$2o$10b2o$10bo$11b3o$13bo11b2o$21b2o 2b2o$20bobo$21bo$17bo$16bobo4b2o$15bo3bo3bo$14bo3bo5b3o$13bo3bo8bo$12b o3bo$13bobo$14bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBNAIL THUMBSIZE 2 WIDTH 600 HEIGHT 600 GPS 20 LOOP 260 ZOOM 16 PAUSE 2 T 91 PAUSE 2 AUTOSTART ]]

The p8 G-to-H, with a minimum recovery time of 192 ticks (or 96 via overclocking) (click above to open LifeViewer) RLE: here Plaintext: here

x = 281, y = 285, rule = B3/S23 54b2o$55bo$55b3o99b2o$158bo106b2o$158b3o105bo$266b3o13$56b2o$56b2o7b2o $65bo93b2o$63bobo93b2o7b2o97b2o$63b2o103bo98b2o7b2o$166bobo107bo$166b 2o106bobo$32b2o15b2o223b2o$33bo14bobo$30b3o15bo86b2o15b2o$30bo16b2o87b o14bobo89b2o15b2o$133b3o15bo92bo14bobo$10bo9bo112bo16b2o89b3o15bo$10b 3o5b3o220bo16b2o$13bo3bo95bo9bo$12b2o3b2o94b3o5b3o97bo9bo$116bo3bo100b 3o5b3o$9bo5bo99b2o3b2o102bo3bo$10b2o2bobo206b2o3b2o$9b2o3bo97bo5bo$15b o97b2o2bobo100bo5bo$112b2o3bo103b2o2bobo$118bo101b2o3bo$26b2o13b2o183b o$26b2o13b2o$14b2o113b2o13b2o$13bo2bo112b2o13b2o91b2o13b2o$8b2o4b2o101b 2o118b2o13b2o$7bobo106bo2bo105b2o$7bo57b2o44b2o4b2o105bo2bo$6b2o57b2o 43bobo106b2o4b2o$16b2obo90bo57b2o48bobo$16b2ob3o87b2o57b2o48bo57b2o$22b o96b2o96b2o57b2o$16b2ob3o43b2o52bo107b2o$14bo2bobo2b3o40b2o53b3o104bo $14b2o5bo2bo26b2o69bo45b2o58b3o$18b3obo27bobo73b2o40b2o60bo45b2o$17bo 4b2o2b2o22bo72bo2bobo25b2o120b2o$17bo2b2o3bobo21b2o8b2o61bobobobo24bo bo106b2o$16b2obo3b3o11b2o20bo61bobobo2b2o23bo81b2o24bobo$19b3o4bo2bo3b 2o2b2o21b3o58bobobobo2bo21b2o8b2o70bo2bo23bo$20bo3b2o4bobobo27bo55b2o b2ob2obob3o8b2o20bo70bobobo22b2o8b2o$17b2o2b2o2bobobo3bo84bobo10bo4b2o 2b2o21b3o67bobob2o9b2o20bo$17bo4b4o2bo9bo81bob2obobo3bo3bobo27bo65b2o bobo2bo4b2o2b2o21b3o$14b2obo2bo3bo2b2o7bo2bo80bo2bo7bo4bo94bo2bo3b3o2b obo27bo$15bo2b3obob2obo10bo82bo3bobo3bo11b2o83b2obo2bobo2bo4bo$15bo5b obo6b5ob3o2b2o79b3ob2ob2o6bobo2bo2bo82bo2b2o4b2o$16b3o2bo2b2obo2bo3b2o bo2bo2bo80bo4bo9b4o86b2o4bobo8b2o$18bo3bobob2o3b8obob2o81b3obo11b3o87b obobobo8bo$23bo15bo2bo85bob2o2b2obo7bo85bo4bo10b3o$30bobo3b2o4bo84bo2b o3bobo7bobo85b4o13bo$30b2obobo2b4o85b2o2b3ob2o8b2o86bo$33bob3o4b3o91b o94bo$30b3o3bobo2bo2bo86b2o98b2o$29bo2bob2o6b2o86bo2bobobo$29bo2bobob ob3obo87b2ob3ob3o$30b3o2bo6bo88bobo2bo3bo$33b2o2bob3o89bob2obo2b2o$30b 3o6bo92bo2bo$29bo3bo2b2o95b2o$28bob2obo3b5o$28bobo2b2obo5bo$27b2obo3b 7o2bo$30bobobobo4b2o$30bob2o6bo$31bo3bobo3b2o$32b3ob2o4bo$34bo6bo$36b obobo$35b2ob2o26$268b2o$159b2o108bo$160bo108b3o$48b2o110b3o$49bo$49b3o 13$270b2o$161b2o107b2o7b2o$161b2o7b2o107bo$50b2o118bo106bobo$50b2o7b2o 107bobo106b2o$59bo108b2o$57bobo$57b2o187b2o15b2o$137b2o15b2o91bo14bob o$138bo14bobo88b3o15bo$26b2o15b2o90b3o15bo90bo16b2o$27bo14bobo90bo16b 2o85b2o$24b3o15bo181bo9bo$24bo16b2o72bo9bo98b3o5b3o$115b3o5b3o101bo3b o$4bo9bo103bo3bo103b2o3b2o$4b3o5b3o102b2o3b2o$7bo3bo211bo5bo$6b2o3b2o 101bo5bo103b2o2bobo$115b2o2bobo101b2o3bo$3bo5bo104b2o3bo109bo$4b2o2bo bo109bo$3b2o3bo$9bo230b2o13b2o$131b2o13b2o92b2o13b2o$131b2o13b2o80b2o $20b2o13b2o82b2o106bo2bo$20b2o13b2o81bo2bo100b2o4b2o$8b2o103b2o4b2o100b obo$7bo2bo101bobo106bo57b2o$2b2o4b2o102bo57b2o48b2o57b2o$bobo107b2o57b 2o58b2o$bo57b2o60b2o107bo$2o57b2o60bo109b3o$10b2o110b3o108bo45b2o$10b o113bo45b2o107b2o$6b2o3b3o156b2o93b2o$6bobo4bo45b2o95b2o106bobo$8b4ob ob2o42b2o94bobo106bo$7bo4bob2obo27b2o108bo71b2o10b2o22b2o8b2o$7bob2ob o4bo26bobo107b2o8b2o60bo2bo8bo2bo9b2o20bo$5b2o2bobob4ob2o24bo97b2o20b o61bobo10bobo5b2o2b2o21b3o$6bobo2bobo4bobo22b2o8b2o83b2o2b2o21b3o58bo 14bo4bobo27bo$5bo2b4obo2b2o2bo10b2o20bo83bobo27bo58bo2bo8bo2bo5bo$6b2o 3bobo4bob2o5b2o2b2o21b3o81bo87bo2bo8bo2bo$8b2o3bo2bob2o2bo3bobo27bo77b o91bob3o6b3obo7b2o$8bo5bo4bob3o3bo105bobo4b2o88b2o4b2o11bo$9bo5b4o3bo 109bo3bo3bo89b3o2b3o12b3o$8b2o8bob2o7b2o100bo3bo5b3o86b2o4b2o14bo$15b 2obobo8bo100bo3bo8bo82bob3o6b3obo$15b2obobo9b3o96bo3bo92bo2bo8bo2bo$19b o12bo97bobo93bo2bo8bo2bo$131bo94bo14bo$226bobo10bobo$226bo2bo8bo2bo$227b 2o10b2o20$267b2o$163b2o103bo$164bo103b3o$164b3o6$51b2o$52bo$52b3o7$269b 2o$165b2o102b2o7b2o$165b2o7b2o102bo$174bo101bobo$172bobo101b2o$172b2o 2$245b2o15b2o$141b2o15b2o86bo14bobo$53b2o87bo14bobo83b3o15bo$53b2o7b2o 75b3o15bo85bo16b2o$62bo76bo16b2o$60bobo160bo9bo$60b2o57bo9bo93b3o5b3o $119b3o5b3o96bo3bo$122bo3bo98b2o3b2o$29b2o15b2o73b2o3b2o$30bo14bobo174b o5bo$27b3o15bo72bo5bo98b2o2bobo$27bo16b2o73b2o2bobo96b2o3bo$118b2o3bo 104bo$7bo9bo106bo$7b3o5b3o$10bo3bo224b2o13b2o$9b2o3b2o119b2o13b2o87b2o 13b2o$135b2o13b2o75b2o$6bo5bo110b2o101bo2bo$7b2o2bobo108bo2bo95b2o4b2o $6b2o3bo105b2o4b2o95bobo$12bo103bobo101bo57b2o$116bo57b2o43b2o57b2o$115b 2o57b2o53b2o$23b2o13b2o85b2o102bo$23b2o13b2o85bo104b3o$11b2o113b3o103b o45b2o$10bo2bo114bo45b2o102b2o$5b2o4b2o161b2o62b2o24b2o$4bobo127b2o24b 2o70bo4bo2bo22bobo$4bo57b2o64bo5b2o23bobo69bobo2bo2bo23bo$3b2o57b2o63b obo29bo71bo2bo27b2o8b2o$13b2o113bo29b2o8b2o69bo10b2o20bo$13bo121bo10b 2o20bo70bo6b2o2b2o21b3o$14b3o117bobo5b2o2b2o21b3o63b2o4b3obobo27bo$16b o45b2o65bo3bo3bo3bobo27bo61bo5bo6bo$62b2o64bobo3bobo5bo86b3o4bo$48b2o 77bo3bo3bo97bo4b3o7b2o$47bobo71b2o5bobo13b2o102bo$47bo73bo7bo14bo87b3o 14b3o$46b2o8b2o60b2obo17b2o4b3o103bo$17bo6bo9b2o20bo61bo2b2o16bobo5bo $16bobo4bobo4b2o2b2o21b3o59b2o4bo15bo98bo$15b3o6b3o2bobo27bo61b5o8b2o 5b2o96bobo$16bobo4bobo4bo90bo4b2o6b2o97b2o5bo$17bo6bo97b2o2bo106b2o$32b 2o90bobo$32bo91bobobo2bo$33b3o89b2ob4o$14bo2b2o4b2o2bo7bo91bo$13bo3b3o 2b3o3bo98bobo$14bo2b2o4b2o2bo100b2o! #C [[ THUMBSIZE 2 WIDTH 1500 HEIGHT 1500 ZOOM 1.6 Y -5 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH THUMBZOOM 4 ]] #C [[ LABELALPHA 1 LABELSIZE 30 COLOR LABEL Blue ]] #C [[ LABEL 0 10 2 "p4" ]] #C [[ LABEL 126 10 2 "p5" ]] #C [[ LABEL 252 10 2 "p6" ]] #C [[ LABEL 0 123 2 "p7" ]] #C [[ LABEL 126 125 2 "p8" ]] #C [[ LABEL 225 125 2 "p9" ]] #C [[ LABEL 0 232 2 "p15" ]] #C [[ LABEL 120 224 2 "p29" ]] #C [[ LABEL 225 225 2 "p30" ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

Gallery of periodic Callahan G-to-H, each using a different bouncer that uses a different sparker. (click above to open LifeViewer)

See also

• G4 receiver
• Herschel receiver

External links

• Callahan G-to-H at the Life Lexicon
• p8 G-to-H at the Life Lexicon